abc of biology

Sample Paper – 2008

Class – XII

Subject – Biology

General Instructions:

1. All questions are compulsory.

2. This question paper consists of four Sections A, B, C and D. Section -A contains

8 questions of 1 mark each, Section -B is of 10 questions of 2 marks each,

Section -C has 9 questions of 3 marks each and Section D is of 3 questions of 5 marks each.

3. There is no overall choice .However, an internal choice has been provided

in one question of 2 marks, one question of 3 marks and all the three questions of

5 marks. Attempt only one of the choices in such questions.

4. Wherever necessary, the diagrams drawn should be neat and properly labelled.

SECTION A

1. What is the Ploidy of PEN ? [1]

2. A human zygote has XXY sex chromosomes along with 22 pairs of autosomes

What sex will the individual be? [1]

3. Expand FOAM. What is its significance? [1]

4. Which enzyme…

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